. >> woodruff: russia still has thousands of its own troops massed near ukraine's eastern border. the state department defended secretary john kerry today, over comments that israel could become an apartheid state, unless there's peace with the palestinians. he said it friday, warning israel could wind up with two classes of citizens. in a statement last night, kerry conceded: if i could rewind the tape, i would have chosen a different word. a spokeswoman said today any suggestion that kerry is anti-israel is "completely absurd." the supreme court has upheld federal efforts to stop power plant emissions from blowing across state lines. by six to two today, the justices re-instated a rule adopted in 2011. it requires plants in 27 midwestern and appalachian states to limit pollution that blows downwind to other states. a lower court had blocked the rule from taking effect. house speaker john boehner tried today to smooth ruffled republican feathers, over immigration reform. the dust-up began last week when boehner addressed the immigration issue during an appearance in his home dist